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Two cyclonic circulations embedded into a large area of lower pressure (trough) covering East and South-East Arabian Sea, adjoining Equatorial Indian Ocean and South-West Bay of Bengal on Friday evening could likely extend the ongoing rainy session over the South Peninsula for next 3-4 days.
India Meteorological Department (IMD) located these circulations over the South-East Arabian Sea off North Karnataka and the other over South-West Bay (South Sri Lanka) even as the trough over the South-East Arabian Sea got further extended to as North as Gujarat into the evening.
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The combination would cause easterly flows from the Bay to pass over the South Peninsula and rain down their moisture content in the form of fairly widespread to widespread rainfall accompanied by moderate thunderstorms and lightning over the region for at least three-four days more, the IMD said.
Rains may pick up in South as winter chill grips North
Dry in North-West
Isolated heavy rainfall is likely over Tamil Nadu, Puducherry and Karaikal until Monday; over Kerala and Mahe on Saturday and Sunday; and over Coastal and South Interior Karnataka on Saturday. Isolated to scattered rainfall with thunderstorms is forecast over Maharashtra and Goa for two days. Over North-West India, the prevailing dry north/north-westerly winds may cause minimum (night) temperature to fall gradually by 3-5 degrees Celsius during the next 4-5 days. Cold wave conditions are forecast over Uttarakhand, Punjab, Haryana and North Rajasthan on Monday and Tuesday.
More rain in January
Meanwhile, the IMD’s monthly weather outlook for January indicated above normal rainfall for the South Peninsula and Central India during the ongoing week (January 7-13), while the hills of North-West India (Jammu & Kashmir, Ladakh, Himachal Pradesh and Uttarakhand) may see below normal rain/snow. As for the second week (January 14-20), the absence of any active western disturbance, the principal system responsible for modulating/amplifying weather over North-West India, may sustain below normal rain/snow while a fresh easterly wave, its counterpart system in the South, may generate normal to above normal rainfall over South India.
Heavy rain for Karnataka
The exceptionally heavy rains are unprecedented, especially over South Interior Karnataka. Chitradurga and Hassan received an intense spell nearly reaching an all-time 24-hour-high of 10.2 cm and 7.9 cm, respectively.
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